Phase Vocoder

The phase vocoder is a signal processing technique that manipulates audio by modifying its short-time Fourier transform (STFT) representation, primarily for time-scale modification. Current research focuses on improving phase vocoder accuracy and efficiency, particularly for extreme time stretching and low bitrate audio coding, often employing neural network architectures like convolutional networks and generative adversarial networks to address limitations of traditional methods. These advancements are significant for applications ranging from high-fidelity audio compression to enhancing audio editing and manipulation capabilities in media production.